Metal foil with conductive layer and method of its manufacturing

Abstract

A metal foil has a surface with an added conductive layer comprising carbon nanotubes, wherein the conductive layer is applied so that the carbon nanotubes are arranged on the foil surface randomly and in an amount of 100 ng/cm 2 -10 μg/cm 2 . A method for manufacturing the metal foil with a conductive layer of carbon nanotubes includes mixing carbon nanotubes with a solvent to form a suspension, applying the resulting suspension onto the metal foil surface so that the amount of carbon nanotubes on the surface is 100 ng/cm 2 -10 μg/cm 2 and they are arranged randomly, and then drying the suspension.

What is claimed is: 
     
         1 . A metal foil having a surface provided with a conductive layer comprising carbon nanotubes, wherein the conductive layer is applied so that the carbon nanotubes are randomly arranged on a surface of the foil surface and in an amount of 100 ng/cm 2 -10 μg/cm 2 . 
     
     
         2 . The metal foil of  claim 1 , wherein the conductive layer comprises single wall and/or double wall carbon nanotubes. 
     
     
         3 . The metal foil of  claim 1 , wherein the foil is made of aluminum, or copper, or nickel, or alloys thereof. 
     
     
         4 . The metal foil of  claim 1 , wherein the conductive layer is formed on its surface by applying a suspension which contains carbon nanotubes and a solvent. 
     
     
         5 . The metal foil of  claim 4 , wherein the suspension contains a solvent from the following set: water, ethanol, isopropanol, toluene, organic solvent, n-methylpyrrolidone. 
     
     
         6 . The metal foil of  claim 4 , wherein the suspension further contains a dispersant from the following set: polyvinylpyrrolidone (PVP), polyacrylic acid (PAA), polystyrene sulfonate (PSS), carboxymethyl cellulose (CMC) and a sodium salt of CMC, lignosulfonates, ammonium salts of polymers, sodium dodecilsulfate, and sodium dodecilbensolsulponate. 
     
     
         7 . A method for manufacturing metal foil with a conductive layer on the its surface, wherein a layer of suspension containing carbon nanotubes and a solvent is applied onto the foil surface so that the amount of nanotubes on the surface is 100 ng/cm 2 -10 μg/cm 2  and the nanotubes are arranged randomly, and then the applied suspension layer is dried. 
     
     
         8 . The method of  claim 7 , wherein the suspension includes single wall and/or double wall carbon nanotubes. 
     
     
         9 . The method of  claim 7 , wherein the suspension contains a solvent from the following set: water, ethanol, isopropanol, toluene, organic solvent, n-methylpyrrolidone. 
     
     
         10 . The method of  claim 7 , wherein the suspension further contains a dispersant from the following set: polyvinylpyrrolidone (PVP), polyacrylic acid (PAA), polystyrene sulfonate (PSS), carboxymethyl cellulose (CMC) and a sodium salt of CMC, lignosulfonates, ammonium salts of polymers, sodium dodecilsulfate, and sodium dodecilbensolsulponate. 
     
     
         11 . The method of  claim 7 , wherein the metal foil is made of aluminum, copper, nickel, and/or alloys thereof.